Screen shots will be great .....but still i haven't manage to download artios.CAD 12.
it says that file is damaged

Where did it say damaged? i struggled to download it, quickest way i found was to get download accelerator plus on windows 7, on my windows 8 comp DAP screwed the connectivity up so avoid getting that. I downloaded the rapidshare app for my mobile and found that kept error-ing so try what i suggested. I've downloaded it so its not damaged. it must be your download.